China 1 Climate change 1 Climate models 1 Critical transition 1 Early warning 1 Early warning signal Ecosystems 1 Eutrophication 1 Fish 1 Fish populations 1 Fish stocking 1 Fisheries 1 Hypophthalmichthys 1 Hypophthalmichthys molitrix 1 Hypophthalmichthys nobilis 1 Lake Qiandao 1 Lake qiandao 1 Lakes 1 Native fishes 1 Population statistics 1 Regime shift 1 Reservoirs (water) 1 Species invasion 1 Species invasions 1 Stockholm Convention 1 Warning signals 1 Water levels 1 carrying capacity 1 ecological modeling 1 ecosystem structure 1